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为研究固体表面物理化学特性对 nm级润滑膜厚度的影响 ,以铝、铬、钛和二氧化钛作为基体表面材料 ,采用NGY- 2型 nm级膜厚测量仪 ,对 136 0 4标准粘度液、添加有10 %十六酸乙酯的 136 0 4溶液和液体石蜡的膜厚进行了测量 ,并利用 Fourier红外分析仪对润滑剂在实验前后的成分变化进行了检测。红外光谱数据表明 ,不同基体下 ,润滑剂在实验前后的化学成分没有发生变化。膜厚测量结果发现 ,基体的表面物理化学性质对润滑膜厚度有较大影响 ,对基体Al,Cr,Ti,Ti O2 ,弹流润滑向薄膜润滑的转变的临界膜厚按基体表面能增大的顺序依次增大。该研究为处于薄膜润滑状态的润滑系统摩擦副的设计提供了理论基础
In order to study the effect of the physical and chemical properties of solid surface on the thickness of the nm-scale lubricating film, aluminum, chromium, titanium and titanium dioxide were used as the substrate surface materials. NGY-2 type nm film thickness measuring instrument was used to add 136 0 4 standard viscosity solution The film thickness of 10% hexadecanoic acid ester 136 0 4 and liquid paraffin was measured, and the composition of lubricant before and after the experiment was tested by Fourier infrared analyzer. Infrared spectroscopy data show that under different substrates, the chemical composition of the lubricant before and after the experiment did not change. The results of film thickness measurement show that the surface physicochemical properties of the matrix have a significant influence on the thickness of the lubricating film. The critical film thickness of matrix Al, Cr, Ti, Ti O2 and the transition from the elastohydrodynamic lubrication to the film lubrication increases as the substrate surface energy increases In order of increase. This study provides a theoretical basis for the design of the friction pair in the lubrication system of the film